10 s/day 365 d/yr
3,650 s / 60s per minute = 60.833333 min
Only 1 hour per year.
She'll be happy to know it would take 8,760 years before that 10 seconds per day comes to one earth year. I didn't adjust for leap years or Daylight Savings or travel to different time zones. Or extraterrestrial adventuring, travel at speed of light, etc.